Circuit-breaker structure



Aug. 24, 1926. 1,597,296

w. M. SCOTT CIRCUIT BREAKER STRUCTURE Filed Au ust 50. 1921 4 Sheets$heet 2 IN VEN TOR km @M mxw 1 A TTORNE Y Aug; 24 1926. 1,597,296

w. M. sco'r'r CIRCUIT BREAKER STRUCTURE 7 Filed August 30. 1921 4 Sheets-Sheet 3 INVENTOR 24m wiacsm & ATTORNEY Aug. 24,1926. 1, 1,2 6;

W. M. SCOTT CIRCUIT BREAKER STRUCTURE Filed August 30, 1921 4 Sheets-Sheet 4 INVENTOR A TTORNE Y Patented Aug. 24, 1926.

UNITED STATES WILLIAM M. SCOTT, OF TREDYFFRIN TOWNSHIP, CHESTER COUNTY, PENNSYLVANIA.

CIRCUIT-BREAKER STRUCTURE.

Application filed August 30, 1921. Serial No. 496,815.

M invention relates to automatic circuit. brea ers' for automatlcally mterruptmg.

electric circuits upon occurrence of abnor-' mal electrical conditions, as overload, no voltage, reverse current, etc. and more particularly, my invention relates'to automatic circuit breakers of the so-called non-closable type, characterized by mechanism preventing closure of the circuit breaker during the continuance of an abnormal electrical condition.

My invention resldes in circuit breaker mechanism of the non-closable type havingfeatures of structure and arrangement here-' inafter described.

My. invention resides also in circuit breaker mechanism of the non-closable type with which there is associated additional, preferably detached, mechanism operable In one direction for effecting closure of the circuit breaker mechanism and in opposite direction for effecting manual tripping thereof.

My invention resides in circuit breaker mechanism of the character referred to on closed within a box or housing, a wall of which, preferabl movable, as a door, carries the aforesai additional mechanism for manually closing and tripping the circuit breaker mechanism by distinct movements.

My invention resides in apparatus of the character hereinafter described and claimed.

For an illustration of various forms my invention may take, reference may be had to the accompanying drawings, in which:

Fig. 1 is a side elevational view, partly in section, and with parts broken away, of apparatusembodying my invention.

Fig. 2 is a front elevational view of the structure shown in Fig. 1, with the front wall or door of the housing removed.-

Fig. 3 is a side elevational view, on enlargedscale, of the rincipal elements of thestructure shown in igs. 1 and 2, the position corresponding with circuit closing position of the circuit breaker mechanism.

Fig. 4 is a view of the structure shown in Fig. 3, corresponding with open circuit posi-v tion of the circuit breaker mechanism.

Fig. 5 is a bottom plan view of the structure shown in Fig. 3.

Fig. 6 is a side elevational view, and Fig. 7 a bottom plan view, of the main operating lever.

Fig. 8 9 a bottom plan view, of the secondary operating lever.

which latter is is a side elevational view," and Figs Fig., 10 is a side elevational view, and- Fig-11 a bottom plan view, of one of the latches.

Fig. 12 is a side elevational view, and Fig.

13 a front elevational view, of-the latch actuating structure.

Fig.14is a side elevational view of the modification showing the operating handle applied directly lever. i

Referring to the drawings, 1 is a vertito the main operating cally; disposed plate or base of insulating I material, as slate, upon the front face of which is secured a three-pole circuit breaker mechanism utilizable for three wiredirect current systems, for three-phase alternating current systems, or for any other suitable apparatus, it being understood,-.however,

that my invention is not limitedwith respectto the number of poles involved.

Enclosing and covering the circuit breaker mechanism is the box or housing H, preferably of sheet metal, and with insulating material. t is secured to the base 1 by any suitable means, as screws 2, extending through the base 1 from the front thereof and threaded into the angle pieces 3 forming part of the structure of the box H.

Secured to the upper face of the box H are hook members 4 whose vertical downwardly extendin ends pass through slots in the plates 5 forming part of the structure of the rear box I, preferably of sheet metal and having for its sixth wall the aforesaid base 1. By the hook structure described, the base 1 and all parts carried there by, including-the box or housing H, are hung upon and detachable from the box I, generally secured in place upon a suitable support, as a pillar, wall or the like, by any suitable attaching means, as screws 6. The base 1, after it is placed in the position indicated in Fig. 1, is' secured adjacent its lower edge to the box I by any suitable means, as a screw 2.

. referably-lined Through a conduit pipe 7 extend the in- I sulated supply circuit. conductors 8, which extend into the interior of the box I and are provided, respectively, with terminals 9,by

which they are connected to the circuit ends within the box I terminals 12, by which they are connected to the circuit breaker studs.

Hinged .to the box or housing H at 13 is the door or movable cover or wall 14 through apertures which adjacent its lower edge extend spring catches 15 secured upon the inside of the bottom of the box H. Secured to the box H is a hasp or member 16 having a hole through which may extend the locking member of a adlock or other locking means for locking t e door 14 inclosed position.

The three switch members constituting the three poles of the circuit breaker mechauism are indicated at A, B and C, Fig. 2, and only one of which, namely, B,.1s shown in Fig. 1. w 3

Each of these switching or breaker mechanisms comprises the terminal blocks 17 and 18 having studs 19' extending through the base 1 into the box I Where the aforesaid conductors 8 and 11 are connected therewith. The lower terminal blocks 18 of the breaker poles A and C connect, respectively, to the windings of tripping magnets 20, 20, whose remaining terminals connect to studs 19 extending into the box I and to which two of the conductors 11 are connected, whereby in series with each of two of the three poles there is an overload tripping magnet.

Adapted to engage and bridge the ter- I minals 17 and 18 of eachbreaker mechanism is the laminated bridging member 21 carried by the arm 22 pivoted at 23 to a bracket or other suitable support secured to the base 1. Pivoted to the arm 22 at 24 is a toggle link 25 integral with the member 2 6, the link 25 or member 26 being in turn pivoted at 27 to the toggle link 28 pivoted at 29 to a bracket or other support secured to the base 1, the links 25 and 28 forming a toggle for forcing the bridging member 21 into engagement with the terminal blocks 17 and 18. The memb rs 26 of the three breaker mechanisms A, B and C are tied together by the transversely extending bar 30, whereby all the toggle mechanisms and all the bridging members 21 operate in unison.

Secured to the bar 30, as preferably midway of its length in front of the breaker unit B, is the member 31, to which there is pivoted at 32 the links 33, which are in turn pivoted at their lower ends at 34 to the secondary operating lever 35, consisting of two similar members spaced apart, as indicated in Fig. 9, but attached to each other by the integral transversely extending tie members 36 and 37. The member is pivotedat 23 concentrically with the arm 22 of the middle breaker unit B. Pivoted to the lever 35 at 38 is a latch 39, which may be termed the non-closable latch in the sense that it is the latch which connects the main and secondary operating levers and which is tripped to disconnect said levers upon attempted closure of the breaker mechanism during continuance of abnormal circuit condition. At its rear end the latch 39 has the lugs or projections 40 and 41 spaced from each other at 42, Fig. 10, the lugs 40 and 41 embracing or being disposed, respectively, above and below the plate 43 attached to the latch actuating mechanism comprising the transversely extending bar 44 carried by arms 45 pivoted at 46 to the base 1. 7

Each of the magnet coils 20 co-acts with a core structure having the poles 20, with which co-acts an armature 47 suitably pivoted, as at 46, and adapted upon energization of the magnet to be attracted upwardly, after release of the movable from the stationary sucker element of the start-delaying device D, and engage the under side of the bar 44, which causes upward movement of the aforesaid plate or member 43 and also moves upwardl the tripping member 48,

which co-acts with the tail of the main latch 49 pivoted at 23 to a stationary housing or bracket secured to the base 1 and having at its forward end a latch hook adapted to restrain, by engagement with the pin or roller 50 on the member 26, the togglo in extended position, though somewhat undertravelled, and the bridging member 21 in circuit closing position indicated in Fig. 1. Thefllatch 39 has the latching surface 51 adapted to thrust against the co-acting surface 52 on the members 53 secured to each other, Fig. 7, and forming with the attached members 54 the main operating lever 55 pivoted at 23 to a stationarymember secured to the base 1. Forming a part of the main operating lever 55 is the upwardly extending lug member 56 co-acting with the transversely extending lug 57 on the latch 39.

The members 53 of the main operating lever 55 extend forwardly and terminate at 58, at which the force for manually actuating the circuit breaker mechanism is applied. This force may be applied to the member 58 directly by the hand of the operator through the handle 59, as indicated in Fig .14. In the arrangement of Figs. 1, 2 and 3, the end 58 of the main operating lever 55 is dis"- posed in the path of travel of the members 60 and 61, which in the example illustrated are extensions on the single member or piece 62 secured between the members 63 of the insulating material which in turn are secured to the member 64, Fig. 2,-which is pinned to the shaft 65, whose axis of rotation is normal to the base 1 and which has bearings at 66, 66 in the bracket member 68 secured upon the inner side of the wall or door 14 and movable therewith. Secured upon the shaft on the outside of the wall or door 14 is the operators handle 69, which has upwardly extending lugs 70 spaced from each other to receive the locking member of a padlock,

a hole in the member 71 attached to the door 14, the presence of the locking member of the padlock between the lugs 70 preventing rotation of the handle 69, shaft and parts attached thereto. The shaft 65 and the parts attached thereto are biased toward normal position, that indicated in Fig. 2, by a spring 72, which opposes rotation of the shaft 65 and the parts attached thereto in both directions.

The operation is as follows:

With the structure in the circuit closing position illustrated in Fig. 1, upon occurrence of an abnormal electrical condition in the circuit, one or the other, or both, of the electromagnets 20 will be energized to degree suflicient to attract the armature or armatures 47, as a result of which the tripping member 45 will be lifted, thereby rotating the latch 49 in clockwise direction, Fig. 1, and releasing the member 26, and simultaneously the tripping member 43 will engage the under side of the lug 40 of latch 39, rotating that latch in clockwise direction about its pivot 38, disengaging the lug or latch surface 51 from the co-acting surface 52 of the main operating lever 55. As a result of the actuation of the latch 49 the toggle 25, 28 collapses, and the bridging members 21 separate from their terminal blocks 17 and 18, thereby interrupting the circuit, the final are being taken as usual by the carbon shunt contacts 73 and 74. Upon collapse of the toggle as aforesaid, the member 26 is rotated in counter-clockwise direction about its pivot 24, causing counterclockviewed in Fig. 1, and causing it to approach the lever 35, and finally the latch 39, under the influence of gravity, or spring,, not shown, resumes the relative position indicated in Fig. 1, whereby the secondary lever 35 is locked to. the main lever 55. Thereafter the handle 69 is rotated in counterclockwise direction, causing the lug or member 60 to engage upon the upper side ofthe end 58 of the main lever 55,'depressing it, and thereby rotating the lever 55 in clockwise direction, causing rotation in like direction of the co-axially pivoted lever 35, and followed by extension of the toggle structure and engagement of the contact members 21 with their terminals 17 and 18, the latch 49, under the influence of gravity,

magnets 20 will be energized, with the result that the tripping member 43 will be elevated or moved to higher position, and the under side of the lug or extension 40 of the latch 39 will ride up upon the top surface of the tripping member 43, causing a clockwise rotation of the latch 39, as viewed in Fig. 1, and consequently an automatic disengagement or release of the sec-. ondary operating lever 35 from the main operating lever 55, the circuit breaker structure then flying to open circuit position, as in the case first described.

With the circuit breaker mechanism in circuit closing position as indicated in Fig. 1, if it should be desred to trip it manually, the operators handle 69 is moved in clockwise direction, as viewed in Fig. 2, causing the lug 61 to engage the under side of the end 58 of the main operating lever 55, causing counterclockwise rotation of the main operating lever 55, as viewed in Fig. 1, the latch 39 in consequence engaging, by its lug 41, the under side of the tripping member 43, forcing it and the attached latch actuating mechanism upwardly, and thereby causing the tripping member 48 to engage and actuate the latch 49 to release the member 26, and simultaneously the member 56, carried by the main operating lever 55, engages the laterally extending lug 57 upon the latch 39, causing disengagement of the latch surface 51 from the co-acting surface 52 upon the lever 55. The mechanism is now unlatched, as regards both latches 49 and 39:, and the circuit breaker mechanism flies to open circuit position, under the influence of gravity, or spring means, not shown, operating upon the arms 22.

Access to the interior of the box H is obtained by swinging the door 14 upon its pivot 13, the actuating or control mechanism, including members 60 and 61, being detached from the circuit breaker mechanism, particularly the end 58 of the lever 55, and moves withthe door 14. Upon reclosure of the door 14 the control or actuating mechanism carried thereby is brought into operative relation with respect to the lever 5 5, regardless of whether the circuit breaker mechanism is in circuit closing posltion, or open. From the foregoing'descnptlon it 1s apparent that I have provided non-closable circuit breaker mechanism comprising an operating or control member which is actuated in one direction for actuating or resetting the switch or circuit breaker mechanism, and is actuated in opposite direction for tripping the circuit breaker mechanism.

The main operating lever 53, 54, second ary operating lever 35, and latch 39, constitute in effect a non-closable unit connected with the switch or circuit breakercunit by or through the link 33. Such combination, except for specific features hereof, is claimed in my Letters PatentNo. 1,461,942?! J uly'l'i, 1923.

What I claim is:

1. Circuit breaker mechanism comprising a pivoted contact member, a link co-acting with said contact member for moving the same, a second link co-acting with said first named link and forming therewith a toggle, a secondary operating lever having pivotal operating connection with said second link, a main operating lever, said main.

and secondary operating levers pivoted .concentrically with said contact member, and means forming a detachable connection between said operating levers.

2. Circuit breaker mechanism comprising a pivoted contact member, a link co-acting with said contact member for moving the same, a second link co-acting with said first named link and forming therewith a toggle, a secondary operating lever connected with said second link, a main operating lever, said main and secondary operating levers pivoted concentrically with said contact member, and a latch forming a detachable connection between said operating levers.

3. Circuit breaker mechanism comprising a pivoted contact member, a link co-acting with said contact member for moving the same, a second link co-acting with said firstnamed link and forming therewith a toggle, a pivoted secondary operating lever, a link pivoted thereto and to said second link, a main operating lever, said main and secondary operating levers pivoted concentrically with said contact member, and means forming a detachable connection between said operating levers.

l. Circuit breaker mechanism comprising a pivoted contact member, a toggle link piv oted thereto, a second toggle link pivoted to said toggle link and to a fixed member, main and secondary operating levers pivoted concentrically with said contact member, means forming a detachable connection between said operating levers, and a link pivoted to said first named toggle link and to said secondary operating lever.

5. Circuit breaker mechanism comprising a movable contact member, operating means therefor, main and secondary operating levers, means forming a detachable connection between said operating levers, means connecting said operating means and said secondary operating lever, and means detached from and having lost motion with respect to said main operating lever for actuating said main operating lever for actuating said contact member.

6. Circuit breaker mechanism comprising a pivoted contact member, operating means therefor, main and secondary operating levers pivoted concentrically with said contact member, means connecting said operating means and said secondary operating lever, means forming a detachable connection between said main and secondary operating levers, and means detached from and adapted to actuate said main operating lever for actuating said contact member.

7. Circuit breaker mechanism comprising a pivoted contact member, main and secondary operating levers pivoted concentrically therewith, and a thrust latch pivoted to one of said levers and receiving the thrust of the other for forming a detachable connection between said levers for actuating said contact member,

8. Circuit breaker mechanism comprising a pivoted contact member, main and secondary operating levers pivoted concentrically therewith, and a thrust latch pivoted to said secondary operating lever and against which said main operating lever thrusts to form a detachable connection between said levers for actuating said contact member.

9. Circuit breaker mechanism comprising a movable contact member, a toggle for actuating the same, means for restraining said contact member in normal position, a main operating lever, a secondary operating lever pivoted independently of and operatively connected to said toggle, and a latch pivoted to one of said operating levers and engaging the other for coupling them, said main operating lever movable in one direction for moving said contact member to normal position through said latch, secondary operating lever and said toggle, and movable in opposite direction for actuating said latch to actuate said restraining means;

10. Circuit breaker mechanism comprising a movable contact member, a toggle for actuating the same, means for restraining said contact member in normal position, a main operating lever, a secondary operating lever pivoted independently of.and operatively connected to said toggle, and a latch pivoted to one of said operating levers and engaging the other for coupling them, said main operating lever movable in one direction for moving said contact member to normal position through said latch, said secondary operating lever and said toggle, and movable in opposite direction for actuating said restraining means and said latch for freeing said contact member and for uncoupling said operating levers from each other.

11. Circuit breaker mechanism compris-,

ing amovable contact member, means for restraining it in normal position, an operating lever, a latch detachably connecting said operating lever with said contact member, said operating lever movable in one direction for moving said contact member to normal position, a tripping member for actuating said restraining means to free said contact member, said latch upon movement of said operating member in direction opposite to said one direction actuating said tripping member and therethrough actuating said restraining means. 7 12. Circuit breaker mechanism comprising a movable contact member, means for restraining it in normal position, an operating lever, structure detachably connecting said operating lever with said contact member, said operating lever movable in one direction for moving said contact member to normal position and in opposite direction for actuating said structure to disconnect said operating lever from said movable contact member, and means detached from said operating lever for moving it in opposite directions.

13. Circuit breaker mechanism comprising a movable contact member, means for restraining it in normal position, an operating lever, structure detachably connecting said operating lever with said contact member.'said operating lever movable in one direction for moving said contact member to normal position and in opposite direction for actuating said structure to disconnect said operating lever from said movable contact member, and rotatable structure detached from said operating lever and movable in opposite directions for moving said operating lever in opposite directions.

14. Circuit. breaker mechanism comprising a movable contact member, means for restraining it in normal position, an operat ing lever, structure detachably connectmg said operating lever with said contact member. said operating lever movable in one direction for moving said contact member to normal position and in opposite direction for actuating said structure to disconnect said operating lever from said movable contact member, means detached from said operating lever for moving it in opposite directions, a housing enclosing said circuit breaker mechanism and having a wall on which said last named means are supported, and meansfor operating said last named means fromlthe exterior of said housing.

structure is supported, and means for operating said rotatable structure from the exterior of said housing.

16. Circuit breaker mechanism comprising a movable contact member, means for restraining it in normal position, an operating lever, structure detachably connecting said operating lever with said contact member, said operating lever movable in one direction for moving said contact member to normal position and in opposite direction for actuating said structure to disconnect said operating lever from said movable contact member, means detached from said operating lever for moving it in opposite directions, a-housing enclosing said circuit breaker mechanism and having a pivoted door, said last named means carried by said door and operable from the exterior thereof.

17. Circuit breaker mechanism compris ing a movable contact member, means for restraining it in normal position, an operating lever, structure detachably connecting said operating lever with said contact member, said operating lever movable in one direction for moving said contact member to normal position and in opposite direction for actuating said structure to disconnect said operating lever from said movable contact member, rotatable structure detached from said operating lever and movable in opposite directions for moving said operating lever in opposite directions, a housing enclosing said circuit breaker mechanism and having a pivoted door, said rotatable structure carried by said door and operable from the exterior thereof.

18. The combination with the movable contact of a switch, of operating means therefor, a member for moving said operating means and disengageable therefrom,

electro-responsive means for disengaging said operating means from said member, an enclosing housing, and an actuating member carried by said housing in detached relation to said member and operable from the exterior of said housing for actuating said member by movement in one direction for disengaging said member from said operating means and by movement in opposite direction to actuate said movable contact through said member.

19: The combination with the movable member of a switch, of operating means therefor, an actuating member for actuating said operating means and disengageable therefrom, a latch for locking said switch member in normal position, electro-magnetic means controlling said latch and adapted to disengage said operating means from said actuating member, an enclosing housing, a pivoted door therefor, a member carried by said door of said housing in detached relation to said actuating member to actuate it, means on the exterior of said housing for actuating said last named member, said member carried by said door-operable from the exterior of said housing for actuating said latch.

20. The combination with the movable member of a switch, of operating means therefor, an actuating member for actuating said operating means and disengageable therefrom, a latch for locking said switch member in normal position, a latch actuator for actuating said latch and for disengaging said operating means from said actuatin "member, electro-responsive means contro ling said latch actuator, an enclosing housing, a member carried by said housing in detached relation to said actuating member, means external to said housing for actuating said last named member and through it actuating said latch actuator.

21. Circuit breaker mechanism comprising a movable contact member, means for restraining it in normal position, an operating lever, structure detachably connecting said operating lever with said contact member, electro-magnetic means for controlling mg lever to restore said contact mem said restraining means and said structure,

said operating lever movable in one direction for moving said contact member to normal position and in opposite direction for disconnecting said operating lever from said movable contact member, an enclosing housing, an actuating member carried by said ousing and operable from the exterior thereof, said actuating member having elements spaced from each other and disposed in detached relation to said operating lever, movement of said actuating member in one direction causing one of said elements to engage and actuate said operating lever to disconnect it from said movable contact member, and in opposite direction to cause the other of said elements to engage said 0 ratr to normal position.

, 22. Circuit breaker mechanism comprising;

a movable contact member, main and secondary operatmg levers, and a' thrust latch pivoted to one of said levers and receiving the thrust of the other for forming a de tachable connection between said levers for actuatin said contact member, said latch and em other lever having 00-. -lu whereby upon reverse movement 0 said other lever said latch is actuated to disen gage said levers 23. Circuit breaker mechanism comprising a movable contact member, main and secondary operating levers, and a thrust latch pivoted to said secondary operating lever and against which said main operating lever thrusts to form a detachable connection between said' levers for actuating said contact member, said latch and said main operating lever having co-acting lu wherebyupon reverse movement of sai main operating lever said latch is actuated to disengage said levers.

24. Circuit breaker mechanism comprising a movable contact member, means or restraining the same in normal position, an

operating lever, a latch forming a detachableconnection between said operating lever and said contact member for causing actuation of said contact member by said operatin lever b movement in one direction, sai latch upon movement of said operating lever in reverse direction actuating said restraining means to free said contact member.

25. Circuit breaker mechanism comprising a movable contact member, means for restraining the same in normal position, an operating lever, a latch forming a detachable connection between said operating lever and said contact member for causing actuation of said contact member by said operating lever by movement in one'direction, said operating lever by movement in reverse direction actuating said latch to break said connection and to actuate said restraining means through the medium of said latch.

26. Circuit breaker mechanism com rising a movable contact member, means or restraining is in normal position, a secondary operating lever connected therewith for actuating the same, a main operating lever, a latchpivoted to said secondary lever and coacting with said mainlever for forming a detachable connection through which said operating lever is actuated by Lmovement of said main lever in one direction, said latch actuating said restraining means to free said contact member upon reverse movement of said main lever.

27. Circuit breaker mechanism com rising a movable contact member, means or restraining it in normal position, a secondary operating lever connected therewith for actuating the same, a main operating lever, a latch pivoted to said secondary lever and co-acting. with said main lever for forming a detachable connection through which sai and to actuate said restraining means through the medium of said latch free said contact member.

28. Circuit breakermechanism comprising a movable contact member, means or restraining it in normal position, an operating lever, a latch forming a detachable connection between said operating lever and said movable contact member for actuating said contact member by movement of said lever in one direction, a tripping member for actuating said restraining means and said latch, and electro-responsive means for actuating said tripping member, said latch upon reverse movement 0 said operating lever actuating said tripping member and therethrough said restraining means.

29. Circuit breaker mechanism comprising a movable contact member, means for res training'it in normal position, an operating lever, a latch forming a detachable connection between said operating lever and said movable contact member for actuating said contact member by movement of said lever in one direction, and a tripping member for actuating said restraining means, said latch actuated upon reverse movement of said operating lever to disconnect ,said lever from said contact member and actuating said tripping member and therethrough said restraining means.

30. Circuit breaker mechanism comprising a movable contact member, means for restraining it in normal position, anoperating lever, a latch forming a detachable connection between said lever and contact member for actuating said contact member by movement of said lever in one direction,

a tripping member for actuating said re-,

straining means to free said contact member, a lug on said latch actuated by said tripping member to actuate said latch to disconnect said operating lever from said contact member, and a second lug on said latch for engaging and actuating said tripping member and therethrough said restraining means upon reverse movement of said 0 erating lever.

31. Circuit breaker mechanism comprising a movable contact member, means for restraining it in normal position, an operating lever, a latch forming a detachable connection between said lever and contact member for actuating said contact member by movement of said lever in one direction, a. tripping member for actuating said restraining means to free said contact member, and a pair of lugs on said latch spaced from each other to embrace said tripping member, whereby said tripping member may actuate said latch and said latch may actuate said tripping member and therethrough said restraining means upon reverse movement of said operating lever.

32. Circuit breaker mechanism comprising a movable contact member, means for restraining it in normal position, an operating lever, a latch detachably connecting said operating lever with said contact member for actuating said contact member by movement of said operating lever in one direction, a housing enclosing said circuit breaker mechanism, an actuator rotatable about an axis parallel to the plane of movement of said operating lever carried by a wall of said housing in detached relation to said operating lever, and means on the exterior of said housing for moving said operating lever in opposite directions through said actuator.

33. Circuit breaker mechanism compris-" ing a movable contact member, means for restraining it in normal position, an operating lever, a latch detachably connecting said operating lever with said contact member for actuating said contact member by movement of said operating lever in one direction, a. housing enclosing said circuit breaker mechanism, an actuator rotatable about an axis disposed to one side of and parallel with the plane of movement of said operating lever carried by a wall of said housing in detached relation to said operating lever, and means on the exterior of said housing for moving said operating lever in opposite directions through said actuator.

34. The combination with a base, of a movable contact-member movable in a plane normal to said base, means for restrain ing said contact member in normal position, an independently movable operating member, means detachably connecting said operating member with said contact member, a member rotatable about an axis normal to said base for actuating said operating member. and electro-magnetic means for controlling said restraining means and said detachable connecting means.

35. The combination with a base, of a movable contact member movable in a plane normal to said base, means for restraining said contact member in normal position, an independently movable operating member, a latch detachably connecting said operating member with said contact member, said operating member'movable in one direction for moving said contact member to normal position, and upon movement in o posite direction effecting actuation of sald restraining means through said latch, and a member rotatable about an axis normal to said base for actuating said operating member in said opposite directions.

In testimony whereof I have hereunto aflixed my signature this 29th day of August, 1921.

WILLIAM M soorr, 

